Conversely, you buy a CD from a band you've never heard of just because you like the album art or maybe even the title or the band name, and you find out it's a god damn masterpiece from start to finish. This is how I discovered Audioslave almost 20 years ago and it's the best $14 I ever spent. I still have the disc btw and it still plays perfectly.
Technically the one I bought on a whim back then was Out of Exile, which I would now consider the weakest of the three, but I liked it enough to seek out more.